Heavy maternal investment makes sense: Females bear only four or five offspring in a lifetime. The tail of this Old World monkey isn’t prehensile but instead is used for balance, as with this ...

The United States Department of Agriculture sent an official warning letter to Eastern Virginia Medical School for what it called alleged violations of handling animals used in testing.

Interestingly, recent research led by the University of Vienna in Austria has shown that, unlike humans, Japanese macaques ...

Permanent mother-infant separation prior to natural weaning is a common husbandry practice in monkey breeding colonies. In the United States, such colonies have been established in all eight Regional ...

Cryo-electron microscopy reveals the structural basis for the restriction of hepatitis B virus (HBV) entry in macaques, enhancing our understanding of viral dynamics. A team of researchers from the ...

Nong has been walking in circles for an hour. Attached to his tight metal collar is a short 3m chain chained to a bamboo pole. The strong macaque monkey takes the chain in his hand, his facial ...

The 43 rhesus macaque monkeys that escaped a South Carolina medical lab this week are among the most studied animals on the planet. And for more than a century, they have held a mirror to humanity ...

Of two hunky monkeys, which would you say has the most sex appeal? That’s easier to answer if you’re a rhesus macaque (Macaca mulatta)—or Constance Dubuc, an evolutionary biologist at the ...